cotiart



(No Moden.) Y 4 sheets-sheet 2.

J. P. GOTIART."

PURN'AGB.

No. 287,788. Patented Apr. 29, 1884.

wrrNEssEs INVENTOP.

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UNITED 'STATES PATENT Orricn.

JEAN PIERRE' COTIART, OF HAVANA, CUBA.

i FURNACE.

SPECIFICATION forming part of Letters Patent No. 297,7-68, dated April29, 18784.

Application filed April l0, 1883. (No modcl.) Patented in EnglandFebruary 3, 1883, No. 590, and in France February 16, 1883,

, v No. 141,458. v v v T0 all whom it may concern:

Be it known that I, JEAN PIERRE Corninr, a citizen of the Republic ofFrance, residing at Havana, in the Island of Cuba and Kingdom of Spain,have invented certain new and useful Improvements in Furnaces, (forwhich I have obtained Letters Patent of Great Britain, No. 590, bearingdate February 3, 1883,) of which the following is a specification.

My invention relates to improvements in furnaces for raising steam, orother heating purposes 5 and the object of my improvements is toconstruct furnaces in which green sugarcane refuse, sawdust, and otherwaste material may be consumed without previous drying, thus turningrubbish to protable account and utilizing it for raising steam or otherheating purposes.

To this end my improvements consist in eertain novel devices andcombinations, hereinafter fully set forth. l

In the accompanying drawings, Figure l is a longitudinal section; Fig.2, a sectional plan Fig. 3, a transverse section; Fig. 4, a -frontelevation of a furnace embodying my invention, and Fig. 5 a plan of aportion of one of the layers of fire-bars.

The exterior wall, a,'of the furnace is constructed, preferably, ofrefractory-materialsuch as nre-brick or silica-and the fire-bridge b,which is built higher than usual,has its upper end inclined,`projectingupward and toward the fire-doors of the furnace, in order that it maydeflect the flame and heat upon the material to be consumed, and thusassist combustion. The fire-bars are arranged in two separate inclinedlayers, the upper, c, being nearest the fire-doors, and the lower, d,interposed between the former and the fire-bridge. Each of these layersis supported at the .end nearest the fire-doors by rollers e and f,which extend across the inside of the furnace, and are carried bymovable brackets e and f which are secured to shafts c2 and f2,respectively. The shafts c2 f2 have each a worm-wheel at one end,whichgears into a worm, and thus enables the fireman readily to raise orlower the firebars c and Z into any required position; or, instead ofemploying worms and worm-wheels,

the fire-bars may be raised or lowered by means of balance-weights, orin any other convenient manner, so as to be accomplished smoothly andwith out undue friction. The upper shaft, e2, is mounted in bearings ina boX-girder frame, g, the lower part of which frame forms the lintelfor the doors Zz at the front of the furnace. By this arrangement theshaft e2 may be easily removed when desired. The lower shaft, f2,

is made in two pieces coupled together, to fa. Y

which are closed after its entrance by means The opposite ends of thereof counter-weights Z', (see Fig. 3,) and falls on` the inclined layersof nre-bars c and d, to be consumed. Suitable feed mechanism should v beadded above the doors Z, to enable the material which is to be consumedto be readily supplied in proper quantities.

When it is desired to clean out the furnace and Vremove the ashes, thetumbling-plate k (which is secured to a shaft, k, having bearings inwall-boxes 7c3) may be lowered by meansV of a worm-wheel keyed orsecured to the shaft k2, and actuated by a hand-wheel, 195, from theoutside of the furnace by a worm at the end of a shaft, kt, and theashes can then be withdrawn from the Vfurnace through one of the frontdoors, 7L. Small sections of grid-plates m are suspended from thestationary bearingbar Z, inorder to admit air, and thereby assistcombustion, and also to prevent thegreen sugar-cane or other refuse fromworking out at the back of the layer of fire-bars d.

Steam-blast pipes n are placed on either side of the furnace, and arearranged, preferably, in the manner shown in Fig. 4. These steamblastsincrease the draft, and thus insure the rapidity of combustion necessaryfor burning sawdust, green refuse, and other waste material withoutprevious drying.

I use, by preference, tWo inclined layers of heating purposes, thecombination, substanire-bars; but I do not confine myself to that tiallyas set forth, of a layer of nre-bars, a staor any other number oflayers. tionary bearer supporting one end of said. ire- I 5 I claim asmy invention and desire to secure bars, and a raising and lowering shaftconnect- 5 by Letters Patented by bracket-arms to a roller whichsupports l. In a furnace for raising` steam or other the other end ofthe iire-bars. heating purposes the combination substany tially as setforth), of a defieoting fire-bridge, JEAN PIERRE COHART' two or moremovable inclined layers of refitnessesz 1o bars, a tumbling-plate, and asteam-blast pipe J 0s. A. SPRINGER,

U. S. Consular Clerk.

or pipes.

2. In a furnace for raising steam or other HENRY G. MORRIS.

